CompTIA A+ Hands-On Labs: Free Home Lab Guide (2026)

Short answer: the best CompTIA A+ hands-on labs are the ones you can build for free on the computer you already own — virtual machines for operating systems, a virtual network for IP and DNS, the real command line for troubleshooting tools, and (if you can) one old PC to physically take apart. A+ rewards people who’ve actually touched the hardware and the command line, and the performance-based questions (PBQs) are built to expose anyone who only watched videos. Labs are how you pass those — and how you sound credible in the interview afterward.

This is the practical companion to How to Study for CompTIA A+. That post covers the method; this one is the lab bench.

Why hands-on labs matter more for A+ than for any other cert

A+ is the entry point into IT, so the exam goes out of its way to test whether you can do the job, not just recite it. Two things make labs non-negotiable:

The PBQs. Performance-based questions are interactive simulations — configure a SOHO router, sort RAID levels, pick the right port, run the right command. They appear first, weigh the most, and are nearly impossible to fake from memorization. You practice them by doing the thing.
Retention. A concept you’ve physically performed is hard to forget. You’ll never confuse ipconfig and ifconfig again once you’ve typed both and watched the output. That’s the whole point of a lab — it converts trivia into muscle memory.

Good news: you don’t need to spend money. Almost every lab below runs on free software and the machine you’re reading this on.

What you need to build a free A+ home lab

You can do ~80% of A+ labs with just this:

A host computer (Windows, Mac, or Linux — anything from the last several years).
VirtualBox — free virtualization software from Oracle. This lets you run multiple “computers” inside windows on your screen.
Free OS install images — Windows 10/11 evaluation ISOs from Microsoft, and a Linux distro like Ubuntu.
Optional but ideal: one junk PC or old laptop you’re allowed to open up. Thrift stores, e-waste piles, and Facebook Marketplace are full of $20 machines that are perfect for this.

That’s it. Everything below builds on that base.

The labs, mapped to the A+ domains

I’ve grouped these by what the exam actually tests. Work through them in order — each one reinforces a chunk of the objectives blueprint.

1. Operating systems — install Windows and Linux in VMs

The single highest-value lab. In VirtualBox:

Create a VM and do a clean install of Windows from the eval ISO. Watch the partitioning step — that’s a real PBQ topic.
Create a second VM and install Ubuntu Linux. A+ Core 2 covers Linux basics, and most people have never seen it.
Take a snapshot before you break things, then experiment freely and roll back. (Snapshots themselves teach you a real-world backup concept.)

You now have a safe playground where nothing you do can hurt your real computer.

2. Command line — run the tools, don’t just memorize them

A+ expects you to know what a long list of commands does. Open a terminal in each VM and actually run them:

Windows: ipconfig /all, ping, tracert, chkdsk, sfc /scannow, gpupdate, netstat, nslookup.
Linux: ip a, ping, ls, cd, pwd, chmod, sudo, cat, grep.

Don’t read the list — type each one, read the output, and write one sentence on what it told you. That sentence is what sticks.

3. Networking — build a tiny virtual network

Networking is where A+ candidates lose the most points, and it’s the most fun to lab:

Set a VM’s adapter to a host-only or internal network, then practice configuring a static IP, subnet mask, gateway, and DNS by hand. Break it on purpose (wrong gateway) and use ping to diagnose.
If you have a spare physical router, factory-reset it and configure a SOHO network: change the admin password, set the SSID, enable WPA2/WPA3, and set up port forwarding. This is a classic PBQ come to life.
Practice identifying ports and protocols (80, 443, 22, 25, 53, 3389…). Flashcards help, but seeing them in netstat output cements them.

4. Hardware — take a real machine apart (and put it back)

This is where the junk PC earns its keep. With the power unplugged and an anti-static strap (or by staying grounded):

Open the case and identify every component: CPU, RAM, motherboard, PSU, storage, expansion cards, and each cable.
Remove and reseat the RAM, then add or swap a stick. Many PBQs are about matching RAM types and capacities.
Swap a storage drive and re-image it from your Windows VM lab.
Identify connectors by sight: SATA, M.2, PCIe, the various USB types, DisplayPort vs. HDMI.

No spare PC? Online interactive simulators and the labs baked into Mike Meyers’ All-in-One guide cover the same ground virtually.

5. Troubleshooting & security — break things on purpose

A+ is fundamentally a troubleshooting cert. Use your safe VM environment to create problems and fix them:

Disable a network adapter and walk the troubleshooting methodology from “identify the problem” to “verify functionality.”
Create standard vs. administrator user accounts and observe permissions in action.
Configure Windows Firewall rules and Windows Update settings.
Set up and test a simple backup and restore using File History or your VM snapshots.

A simple weekly lab rhythm

Labs work best woven into your study, not saved for the end. A sustainable pattern:

For every topic you learn from a video, spend 20–30 minutes doing the matching lab the same day. Watch the OS-install video → install the OS. Learn the commands → run the commands.

That cadence fits neatly into the 8–12 week study timeline most people follow. To map it out by week, grab the free, printable A+ study plan and 10-week daily schedule — it slots specific labs and checkpoints into each week so you always know what to do next.

The one-sentence version

Build a free home lab with VirtualBox, install both Windows and Linux, run every command-line tool by hand, configure a small virtual network, and — if you can — physically take a real PC apart. Do the labs as you learn, not after, and the PBQs that scare everyone else will feel routine.

For where this fits in the full journey from zero to hired, see The Complete Guide to Passing CompTIA A+ and Landing Your First IT Job.

CompTIA A+ Hands-On Labs (Build a Home Lab That Gets You Hired)